Oh whoops, I just realised your previous comment was a reply to @Emotional_Series7814@kbin.cafe and not @skillissuer@discuss.tchncs.de.
Ok so it looks like Piefed is the name of the platform you're on, a different threadiverse platform from Lemmy or Kbin. Unfortunately some of the more advanced syntax like spoilers are the first things to become incompatible when you cross over between different platforms.
This should work on Lemmy:
::: spoiler Test
Test spoiler text
:::
This should work on Kbin, I believe:
::: spoiler
Test spoiler text
:::
!This is the syntax that worked on Reddit.!< (and tbh I quite like that syntax because it enables inline spoilers, instead of only paragraphs)
From what I can tell, Piefed has similar behaviour to Lemmy. Unfortunately emotional_series is on Kbin which means their spoiler syntax is breaking for you, and for me. Their above comment is particularly bad for me because they didn't even include a paragraph break before starting the ::: spoiler
. And it breaks even worse for you because Piefed seems to default to treating the text that Kbin intends to be hidden as the revealed part of the spoiler if they do have the paragraph break. And it also ignored code blocks in order to spoil code.
This is what you should be seeing in the lower comment:
instead of this:
and what emotional_series sees is this: